La classe DOMImplementation

(PHP 5, PHP 7, PHP 8)

Introduction

Cette classe fournit un nombre de méthodes pour effectuer des opérations qui sont indépendantes d'une instance particulière du modèle objet d'un document.

Synopsis de la classe

class DOMImplementation {

/* Méthodes */

public createDocument(?string $namespace = null, string $qualifiedName = "", ?DOMDocumentType $doctype = null): DOMDocument

public createDocumentType(string $qualifiedName, string $publicId = "", string $systemId = ""): DOMDocumentType|false

public hasFeature(string $feature, string $version): bool

}

Sommaire

DOMImplementation::__construct — Crée un nouvel objet DOMImplementation
DOMImplementation::createDocument — Crée un objet DOM Document du type spécifié avec ses éléments
DOMImplementation::createDocumentType — Crée un objet DOMDocumentType vide
DOMImplementation::hasFeature — Teste si l'implémentation DOM implémente une fonctionnalité spécifique

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User Contributed Notes 1 note

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LANGE.LUDO ¶

10 years ago

Ok got it working like a charm using "proxy pattern" with traits. The idea being declaring the common methods inside a "trait" in order for extended and registered Node Classes to have access even if not derived / child of the extended DOMNode…

Here a small snippet :
<?php
    namespace my;

    trait tNode
    {    // We need the magic method __get in order to add properties such as DOMNode->parentElement
        public function __get($name)
        {    if(property_exists($this, $name)){return $this->$name;}
            if(method_exists($this, $name)){return $this->$name();}
            throw new \ErrorException('my\\Node property \''.(string) $name.'\' not found…', 42, E_USER_WARNING);
        }

        // parentElement property definition
        private function parentElement()
        {    if($this->parentNode === null){return null;}
            if($this->parentNode->nodeType === XML_ELEMENT_NODE){return $this->parentNode;}
            return $this->parentNode->parentElement();
        }

        // JavaScript equivalent
        public function isEqualNode(\DOMNode $node){return $this->isSameNode($node);}
        public function compareDocumentPosition(\DOMNode $otherNode)
        {    if($this->ownerDocument !== $otherNode->ownerDocument){return DOCUMENT_POSITION_DISCONNECTED;}
            $c = strcmp($this->getNodePath(), $otherNode->getNodePath());
            if($c === 0){return 0;}
            else if($c < 0){return DOCUMENT_POSITION_FOLLOWING | ($c < -1 ? DOCUMENT_POSITION_CONTAINED_BY : 0);}
            return DOCUMENT_POSITION_PRECEDING | ($c > 1 ? DOCUMENT_POSITION_CONTAINS : 0);
        }
        public function contains(\DOMNode $otherNode){return ($this->compareDocumentPosition($otherNode) >= DOCUMENT_POSITION_CONTAINED_BY);}
    }

    class Document extends \DomDocument
    {    public function __construct($version=null, $encoding=null)
        {    parent::__construct($version, $encoding);
            $this->registerNodeClass('DOMNode', 'my\Node');
            $this->registerNodeClass('DOMElement', 'my\Element');
            $this->registerNodeClass('DOMDocument', 'my\Document');
            /* [...] */
        }
    }

    class Element extends \DOMElement
    {    use tNode;
        /* [...] */
    }

    class Node extends \DOMNode
    {    use tNode;
        /* [...] */
    }

?>

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